Your Guide to the Solar System and the Night Sky
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public Observing fromLocation: Greenwich, United Kingdom edit_location_alt
north SunriseRise: 4:50  
clear_day Transit: 12:56  
SunsetSet: 21:02 south
sunny DaytimeWhat's Visible Now
All Constellations » Orion » 


HR1806 is a main-sequence star in the constellation of Orion.

HR1806 visual magnitude is 6.23. Because of its reltive faintness, HR1806 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.

The table below summarizes the key facts about HR1806:

HR1806 is above the horizon from Greenwich, United Kingdom edit_location_alt. Altitude: 15°.

Celestial coordinates and finder chart of HR1806

HR1806 is situated close to the celestial equator, as such, it is at least partly visible from both hemispheres in certain times of the year. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR1806 are provided in the following table:

05h 26m 02s
-05° 31’ 05”

The simplified sky map below shows the position of HR1806 in the sky:

Finder chart HR1806 star
Simplified finder chart for HR1806.

Visibility of HR1806 from your location

Location: Greenwich, United Kingdom edit_location_alt
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's HR1806 rise, transit and set times from Greenwich, United Kingdom edit_location_alt are the following (all times relative to the local timezone Europe/London):

Azimuth: 95.5°
Max altitude: 33.0°
Azimuth: 264.5°
HR1806 is above the horizon from Greenwich, United Kingdom

Digitized Sky Survey image of HR1806

The image below is a photograph of HR1806 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR1806 is 0.013 arcsec per year in Right Ascension and 0.008 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.

Image of HR1806 star
DSS2 image of HR1806. The red arrow shows the motion of HR1806 during the next 10000 years (2.17 arcmin in Right Ascension and 1.33 arcmin in declination);

Distance of HR1806 from the Sun and relative movement

HR1806 is distant 666.67 light years from the Sun and it is moving far from the Sun at the speed of 18 kilometers per second.

204.50 pc
666.67 ly
18 km/s
0.013 arcsec/year
0.008 arcsec/year

Spectral properties of HR1806

HR1806 belongs to spectral class B9 and has a luminosity class of V corresponding to a main-sequence star.


The red dot in the diagram below shows where HR1806 is situated in the Hertzsprung–Russell diagram.

HR Diagram
H-R diagram showing the position of HR1806. Attribution: Richard Powell / CC BY-SA

Alternative designations of HR1806